clear the composer’s cache or try adding -cache-dir=/dev/null IF the package is being loaded from composer’s cache

How To Diagnose the culprit?

It turns out that this command help a lot:$ composer update -vvv

A Better Solution – Use Satis

UPDATE:

My friend Hari KT on twitter suggested a better solution, that of using Satis (a Package Repository Generator) with composer. I’m yet to try this one out though.
You can find satis on github here: https://github.com/composer/satis

Further Reading

I’m not yet so much versed with composer, this was only my 3rd practical encounter with Composer after watching NomadPHP‘s composer talks by Rafael Dohms (last year) and Beau Simensen (last year ). So if you have any more details or if you see you can add more to this, feel free to post a comment below.